Art4 is a private museum of contemporary art in Moscow, owned by collector Igor Markin. The museum believes viewing art in solitude is boring. Everything in the museum is done to make the viewer more comfortable.

    he holdings of the museum consist of a collection of Russian art from the late 1900s, owned by the founder and comprising several hundred works by Soviet nonconformists as well as examples of Russian contemporary art.

    Unlike other similar art institutions elsewhere in the world, ART4.RU does not conform to the generally accepted principle of allotting each work of art sufficient space to stand out and breathe, as it were; at Markin's museum walls are covered in art from ceiling to floor